"Don't roll your eyes, dear boy," Aziraphale said, proving that he was familiar enough with Crowley to instinctively know his reactions to most things. He did know why Crowely didn't want to go find someone else, he just had a hard time believing it was true. What could Crowley possibly see in him? Maybe it was just the chase, and once Crowley got whatever he wanted he'd lose interest. But Aziraphale hoped that wasn't the case.
There had been a measure of confidence in the act, but it fled as soon as the kiss was done. "I...I don't know," he stammered, wondering if he had done something wrong. He doubted he was very good at this and Crowley likely was used to far better. "I just...wanted to," he admitted, looking down at his hands. "I mean...when you love someone...there's nothing wrong with expressing that through physical means...it's...well...it's not a sin. But clearly I made a mistake and I should...I should just go." He turned, heading back toward his room, intending to spend the next century hiding there.